Digestion apparatus



June 23, 1925,

W. H. SCOTT DIGESTION APPARATUS Filed Sept-- 1924 2 Sheets-Sheet 1 H BTmun/70R June '23, 1925.

MN r es s.

Patented June 23, 19 25.

UNITED STATES i 1,542,843 PATENTOFFICE.

WALTER 11.. soon, on DAYTON, OHIO, ASSIGNQR ToTHEnURIRon COMPANY, ma,

. A CORPORATION OF NEW YORK.

' DIGESTION APPARATUS,

Application filedfl September 2', 1924. Serial no. 735,3?2,

To'aZZ whom 'z'tcnay concern: Be it known that I, WALTER H. Soon, a

citizen of the United States, and a resident ratus, and particularly toapparatus for carrying away the fumes from the flasks employed in thewell known Kjeldahl proc- It hasfor its principal objects the provisionof an improved apparatus, (1) in which the flasks may be more easily andconveniently positioned with respect to the fume tube employed andremoved from position, (2) in which a better fit is secured between thefume tube and the flasks, so that a smaller fan for carrying away thefumes than that ordinarily required, may be used; and (3) in which theflasks are less subject to breakage during the positioning of suchflasks and their removal from operative relation with respect to thefume tube. One embodiment of the invention is shown in the accompanyingdrawings, wherein:

Figure 1 is a perspective view of the assembled apparatus. Fig. 2is apartial side elevation and partial longitudinal section through thenovel formof fume tube which is employed. Fig. 3 is a section on theline IIIIII of Fig. 2, with the flask support and one of the flasksshown in dotted lines. And Fig. 4 is a transverse section through amodified form of fume tube having a set of nipples on each side.

Referring to the drawings, 1 is the fume tube and 2 is the flasksupport, which members are supported from beneath by the two sets ofstandards 3, 3,3 and 4, 4, 4. At the upper ends of the standards 3, 3, 3are suitable T -shaped brackets 5, 5, 5 forked at their upper ends so asto fit around the fume tube. At the left hand end of the fume tube is asuction fan 6 having its inlet coupled to the end of the fume tube. Thefan is driven froman electric motor 7, carried by the base 8, and thebase is supported upon a pair of pipes 9, 9 having their upperhorizontal ends secured in the casting 5. The fumes drawn through thefan are directed through a suitable outlet pipe 10 lead' brackets 11,11, 11, having collars 12 through i I which the pipe standards 4,4, 4extend, the brackets and the support 2 being held at any desired pointof vertical adjustmentf b means of set screws 13 extending through thecollars. The brackets 11 are also provided with laterally extending pipesections 14, which areengaged at their'outer ends by brackets havingcollars 15, through which the standards 3 extend, the collars beingprovided with set screws 16 for holding the brackets inanydesiredposition of vertical adjustment. The ends'of the' pipesections are secured in the brackets by means of the'set screws 17, thetwo setsof standards 3, 3, 3 and'4, 4, 4, being in this manner tiedtogether and mutually braced brackets 11, and clamped in position by theset screws 22. The flask support may be adjusted vertically to bring theflasks 28 to proper position with respect to the fume tube, depending onthe particular size of flask employed, and the gas burners may beadjusted vertically to give a maximum effioiency in heating effect uponthe support v and the flasks carried thereby.

The fume tube l-is of novelconstruction, in that it is provided withlaterally extending inclined nipples 23, integral with the tube section,each section being a unit cast from a corrosion resisting composition,such as high silicon iron, known commercially as duriron. ,Asillustrated, the tube l is made in two sections A and B clamped togetherby means of a pair of flanges, such as the one marked 24 in Fig. 2. Atthe outer end of the section B is a header 25, also preferably ofcorrosion resisting composition, held in place by the clamp 26, having abolt 27 engaging the header at its 3 center. Any number of tube sectionsmay be employed depending on requirements.

In operation, the flasks 28 are seated upon the support 2 with theirlaterally opening ends or necks fitting over the nipples 23. The nipplesare slightly tapering, so that the flask ends can be moved over themuntil a relatively close fit is secured. This arrangernent, with thenipples fitting into the flask ends, p'ro ides a substantial ifnproveinent over the ordinary arrangement, in which the flasks are supporteddirectly beneath the fume tube, with thei'rends i-ojecting throughopenings in the lower wall of the tube. "With such an arrangement, thefit between the necks of the flasks and the Walls of the openings wasnot close, and considerable breakage was liable to oc jur ifipositloning and remevingthe flask-s. 71th the pr sent 'arrangeiment, thefit betweenthe make of the flask and the tube is impro ''d, sq that asmauer fan ma be emplofyecl to "give required suction, and the conveniene ifieiklem to positioning and removing the flasks by merely moving themlaterally, is so 'incieased that the Breakage iiicideiit to these stepsis reduced to a mini The "adjustments of the flask support I andburners, heretofore referred to, perinitsthe 'iis jo'f the "app ratuswith flasks of Yai'ying l'feights and the fame tube by reason ofitsehstructi'on is practically inii'es'tiriictible. l a

If desired, the capacity of the apparatus ma be increased,- by proyidihgnipples 29 oil Both sides of the nine tube, as indicated in Fig. 4, inwhich case a flask support corresponding. to the support 2 is appliedalong each side of the tube, suitable heating means being also applied.

W hat I claim is:

l l 1. In combination in apparatus of the class described, a fui'ne tubehaving laterally and downwardly projecting, integral inlet nipples,suction for the tube, all ad:

jumble flask suppo ting m mberarall l; ing the tube and located belowanfl to slide ,"ther'eof and adapted to "carry a series of flasks havinglaterally open-111g neck adapted to fit over the nipples, and heat-mmeans beneath'the'support. V

2. In combination a fume tube fixed thereon a of tapering nipplesextefi'ding ateran freffl the side tl'i'er'eef i'nlihefldbwi'i 1y. H A fIn testimdfi 'wlier of, 1 have liteurrt subscribed my name this 19th 1day 61? Au gust,1924;

' WALTER H1 SCOTT.

